Canít find my file in my network music player

Iím using dbpoweramp to make music file from my CD for one year, and I store my music file in my NAS, use my Lumin S-1 music network player to these files. It work perfect before but until tonight I rip 2 songs from a new CD, I couldnít find this in my Lumin player (I already put it in my NAS and reload all the CD again everytime when I put new file in my NAS). It never happen before, anyone can tell me the reason? Is it because I only rip two songs?